//
// Created by 123 on 2025/1/7.
//
#include "string"
#include "iostream"
using namespace std;

void test(){
    string str1;
    str1 = "123";
    cout << "str1=" << str1 << endl;

    string str2;
    str2 = str1;
    cout << "str2=" << str2 << endl;

    string str3;
    str3 = 'a';
    cout << "str3=" << str3 << endl;

    string str4;
    str4.assign("hello c++");
    cout << "str4=" << str4 << endl;

    string str5;
    str5.assign("hello c==",5);
    cout << "str5=" << str5 << endl;

    string str6;
    str6.assign(str5);
    cout << "str6=" << str6 << endl;

    string str7;
    str7.assign(5,'x');
    cout << "str7=" << str7 << endl;

}


int main113(){
    test();
}